"I want Thranel Enterprises secured at all costs! Lady Azula wants the entire perimeter under tight security, understand? Every sector, every floor is to be covered with soldiers, mounted cannons, and mechas! Let's move it, soldiers!" The head of security barked orders for two hours straight, making sure that not one human being would be able to get even 300 yards close to the main headquarters of Thranel Enterprises. Azula's orders were clear: not one living soul should be allowed to come close to Thranel Enterprises HQ. Anyone who approaches the main building should be shot on sight. No exceptions. The head of security had no idea what Azula might be building or what if she discovered something revolutionary, but it wasn't for him to question. Azula was his master and her orders were not to be questioned. Obey and give your life to Azula. Those were her orders.

"Sir! There's something approaching HQ and it's coming in fast!"

"WHAT?" The head of security kicked the doors open and ran right out of the main entrance to the building. Like the inside of the building, the outside was littered with hundreds of heavily-armed soldiers, armed from semi-automatic rifles to well-mounted missile launchers. However, that did not make the security-head feel any safer. He looked through his binoculars to pinpoint where the unknown was heading from.

The very sight of the incoming unknown force started to make his skin feel as cold as ice. Who he saw was a man in black flying right at them. The man in black surged with red electricity, looking as if the very heavens grew angry and cast bolts of lightning upon him to unleash their fury upon humanity. The dark warrior was flying at incredible speed, heading right at Thranel Enterprises HQ!

"ALL WEAPONS! FIRE UPON THAT MAN! KILL HIM! KILL HIM NOW!" Without second thought, all of the Thranel security guardsmen unleashed their fierce firepower upon the enemy. The entire tower transformed from a normal skyscraper into a mighty weapon that would lay an entire city into rubble, firing everything it got upon the invader. Seeing the night-sky being lit up by Thranel Enterprises' intense firepower, Angel Heart dodged the bullets and missiles with incredible aerial finesse. He felt he had no time to play around with a bunch of lowlife humans who pose no threat to him in any way. All that mattered was saving the one woman he loves.

A heat-seeking missile found its target, made an upward curve and caught Angel Heart right in the chest, blowing up on impact. Angel Heart spun out of control, losing his momentum. The explosion made the head of security wear a smirk on his face as he continued to look through his binoculars.

"ALL HANDS! CONCENTRATE YOUR FIRE ON THAT MAN! TEAR HIM TO RIBBONS! FIRE!" The soldiers felt their adrenaline rushing through their veins as they aimed their weapons on Angel Heart and squeezed the triggers. Many of them screamed for victory while man others screamed for blood, shouting out DIE DIE DIE. Those who had their binoculars could see Angel Heart getting seriously pelted by their firepower, from bullets to cannon-shells to missiles. Cannon-fire hit Angel Heart square in the face, causing him to spiral out of control even more.

"YEAH! TAKE THAT, YOU SON OF A BITCH! DIE ALREADY! JUST DI-"

The man who manned one of the huge cannons and gave Angel Heart a good shot to the face ate red lightning and exploded into dozens of pieces. Soon after, the cannon met the same fate. Angel Heart let out a mighty roar and unleashed bolts of red lightning out of his very body, destroying all the trajectories around him. Most of the soldiers ceased fire and gawked at the red monster heading their way, feeling excitement completely taken over by fear. They tried to keep their weapons aimed at the main target, but the fear began to make their weapons feel too heavy to wield. The closer the man in black got to the tower, the greater the lightning bolts within him grew, and the greater the fear gripped the very men sworn to protect Lady Azula.

"DON'T JUST STAND THERE! F-FIRE! I DON'T CARE IF YOU RUN OUT OF AMMO! FIRE! FIRE!" Azula's army heard their orders: kill the intruder no matter what! Trembling, the head of security drew out his handgun and opened fire on the airborne Angel Heart. He knew that his little gun won't even scratch the dark warrior, but it was better than doing nothing! He watched his heavily armed soldiers give everything they got on Angel Heart, but to his horror not even the biggest guns were putting a scratch on him.

Getting heavily annoyed by their attempted onslaught, Angel Heart aimed his hands at the main cannons on the 60th, 80th, and 100th floor of Thranel Enterprises and shot incredible red bolts of lightning at them. In an instant, the lightning bolts obliterated all the cannons and all the soldiers manning them. The other soldiers firing from within the building weren't so lucky either, getting fried beyond recognition from Angel Heart's very might. When he saw about 100 soldiers on the ground opening fire upon him, Angel Heart flew straight down on them at frightening speed. In a flash, Angel Heart landed right in front of the main entrance to Thranel Enterprises, shattering the very earth beneath him and sending all the soldiers flying into the air from the very impact. What was once a nice parking lot was a now an enormous crater.

The head of security didn't fare any better. Crushed by a huge piece of concrete, the head of security weakly reached for his gun and aimed it straight into Angel Heart's face.

"D-don't move another inch. I have orders from Lady Azula to… to destroy any threat that dares to challenge Lady Azula's will. Why don't you just die, you son of a –" Angel Heart raised his boot right over his head and brought it straight down through the security leader's skull, splattering his skull and pieces of his brain all over the concrete. Putting his hands into his pockets, Angel Heart walked candidly into the building.

"I have no time for underlings."

-:-:-

The nameless fire-elemental stood like a rock-solid statue at the main doors to Azula's main chamber. Her orders were clear: eliminate Angel Heart and protect Azula from all comers. The elemental knew that whatever was going on behind those closed doors was something big, but that was none of his business. All that mattered to him was collecting his reward-money and live his life he sees fit. His heart began to beat harder when he heard his bounty heading his way up to the top floor, tearing men and machine apart while on his way up.

The dark one crashed right through the floor beneath the fire-elemental and landed with finesse right in front of his fire-bending adversary. The bald-headed elemental opened his eyes in shock when he saw how drenched in blood the man in black truly was. His clothes were tattered up, and his fists were soaked in the blood of hundreds of men who dared to stand in his way. Red electricity surged with life even more when Angel Heart stared coldly into the first man who actually gave Angel Heart a taste of pain.

"Now I understand why you were able to bring me down, elemental. You have the heart of an angel, just like me. The reason you were able to beat me was because unlike me, you fully accepted your new heart. It took me a long time to accept what I have, but now I accept it. The heart beating within me is truly mine, and I'm going to use it to beat the living shit out of you!" Angel Heart raised his right fist right at the fire-elemental's face. The cloth that once belonged to Toph was now soaked in dark-red blood.

"I promised a friend of mine that I will kill every single scumbag that contributed to dragging her into this evil underworld. I don't care if you were directly involved with her fall from grace: YOU'RE STILL GOING DOWN! Too many people I love ended up getting hurt. I'm not going to let you or anyone else hurt Katara ever again." Angel Heart said, staring right through the fire-elemental and setting his focus right on the huge doors behind him.

"Brave words, Angel Heart. Now let's see how well you can back it up!" In a flash, a beam of fire shot out of the fire-elemental's head and blasted Angel Heart right in the chest. The blast completely singed his trench coat and his shirt, not to mention knocking him over 25 feet away and into a concrete wall. As soon as he got knocked into the wall, the elemental ran towards Angel Heart with frightening speed and rammed his fist into Angel Heart's stomach, causing to concrete wall behind the warrior to nearly collapse. The elemental gave him a right hook to the face, a left hook, another right hook, a knee to the ribs, another knee, clinched Angel Heart and delivered a powerful knee to the chin. The elemental used his clinch to throw Angel Heart like a rag doll into a beautiful column. When the dark warrior crashed into column, the elemental ran right at him and rammed his big boot right into Angel Heart's skull, destroying the column and sending Angel Heart skidding down the floor.

When Angel Heart slowly stood up, the elemental began to power up. The orange light on his forehead began to glow larger and brighter than before. This was the first time the pyromaniac had to multiply his power three times over since he was facing a very powerful opponent. Screaming with rage, the elemental unleashed his beam of fire upon Angel Heart. The impact caused a mighty explosion, which nearly knocked the elemental right off his feet. The warrior finally powered down and caught is breath. However, when the smoke began to fade away, red electricity began to surge big-time out of the smoke and debris.

"… You disappoint me, freak." A huge bolt of red lightning shot right out of the smoke and hit the fire elemental square in the chest. The elemental groaned in pain and fell to one knee, unable to withstand the red lightning bolt. Angel Heart emerged from the smoke and began to power up. His shirt and trench coat were gone, and his pants were tattered up. Despite being such a mess, Angel Heart's resolve was completely unshaken. When his fists began to glow hot-red with lightning, the dark warrior threw an enormous uppercut that sent the fire-elemental right into the ceiling. The elemental gagged in pain, but Angel Heart didn't show an ounce of mercy. The dark monster flew straight up towards his victim and rammed him right through the ceiling and into the night-sky. Angel Heart threw hundreds of fists like a blur into his opponent's face and body, not giving him any time to fall back to the building. The elemental was completely helpless to do anything as he took in a serious case of knuckle sandwiches. After yet another uppercut to the jaw, Angel Heart spun in the air and threw a huge spinning kick that sent the elemental spiraling downward through the rooftop of Thranel Enterprises and back into the top floor.

Bloodied and beaten, the elemental weakly got back onto his feet. When he was about to fall backwards, Angel Heart grabbed him by the shirt and aimed his back to the door. The hand grabbing him by the shirt began to glow with serious power.

"Out of the way." Angel Heart blasted the fire elemental right through the doors and destroyed his very body, reducing him to a pile of bones. When he saw the entrance to Azula's main chamber completely open, Angel Heart removed his sunglasses and crushed it with his hand. Eyes glowing hot-red, Angel Heart walked candidly into the chamber. His heart pumped with excitement as he imagined himself strangling Azula with one hand and snapping her neck like a twig. He's gonna take Katara away from Thranel Enterprises, leave Metatron City for good, and find themselves a beautiful home to live happily ever after.

"How nice of you come to my palace, Angel Heart. You've come just in the nick of time to watch your precious Katara die by my hands." Azula sat on her throne, looking high and mighty as she crossed her legs and gazed into Angel Heart's gray eyes.

"… Azula." Angel Heart whispered. Despite giving her a mean glare, Azula couldn't help but gaze into Angel Heart's eyes.

(He's just as beautiful as before. When I kill that bitch I'll have you all to myself…) The very thought of ravaging Angel Heart on her bed made her lick her lips with hunger.

"Where is Katara? WHERE IS SHE?"

"AANG! UP HERE!" Angel Heart looked straight up, seeing Katara tied up in chains and hanging right over a mighty machine which looks similar to a sarcophagus. Hanging right over Katara was Ty Lee, hanging over her like a spider and resting her dagger right on her neck. Watching Angel Heart become helpless put a nice grin on Azula's face. Angel Heart began to tremble.

(What the hell am I going to do?) Angel Heart asked himself.

"This world will be in darkness at last, and I will be one of its rulers. You've lost, Angel Heart. Your girlfriend will die, and you will have no other choice but to give in to the darkness. And when that happens, you… will be…. MINE."